JPS6391137U

JPS6391137U -

Info

Publication number: JPS6391137U
Application number: JP18594586U
Authority: JP
Priority date: 1986-12-02
Filing date: 1986-12-02
Publication date: 1988-06-13

Description

[Brief explanation of drawings]

第１図は本考案にかかわる交流電磁接触器を例
示する概略縦断面図を、第２図は前記接触器の交
流電磁石の裏面を示す概略平面図を、第３図は前
記接触器の磁性体の概略斜視図を、第４図は前記
磁性体に連結されるコイル状形状可変体の荷重特
性を、第５図は前記交流電磁石の前記磁性体の位
置が第１図に例示する場合と異る場合を例示する
概略縦断面図を、第６図及び第７図は前記磁性体
の前記電磁石の中央脚に沿う位置により磁気的作
用の異なる状態を例示する概略図を、第８図及び
第９図は前記磁性体を前記電磁石の両脚に設けた
別の実施例における前記磁性体の磁気的作用を例
示する概略図を、第１０図は従来の交流電磁接触
器を例示する概略縦断面図を、第１１図はコイル
の高温時と低温時における固定鉄心の可動鉄心に
対する吸引力と可動鉄心のストローク量との関係
を示す特性曲線を表わす。１……交流電磁接触器、２……下部枠、４……
固定鉄心、５……可動鉄心、６……コイル、７…
…可動接触子支え、８……可動接触子、１１……
固定接触子、１２……磁性体、１４……形状可変
体、１６……エアギヤツプ。 FIG. 1 is a schematic vertical cross-sectional view illustrating an AC electromagnetic contactor according to the present invention, FIG. 2 is a schematic plan view showing the back side of the AC electromagnet of the contactor, and FIG. 3 is a diagram showing the magnetic body of the contactor. 4 shows the load characteristics of the coil-shaped variable body connected to the magnetic body, and FIG. 5 shows the case where the position of the magnetic body of the AC electromagnet is different from that illustrated in FIG. 1. FIGS. 6 and 7 are schematic longitudinal cross-sectional views illustrating the case where the magnetic body acts differently depending on the position of the magnetic body along the central leg of the electromagnet, and FIGS. FIG. 9 is a schematic diagram illustrating the magnetic action of the magnetic body in another embodiment in which the magnetic body is provided on both legs of the electromagnet, and FIG. 10 is a schematic vertical cross-sectional view illustrating a conventional AC magnetic contactor. FIG. 11 shows a characteristic curve showing the relationship between the attraction force of the fixed core to the movable core and the stroke amount of the movable core when the coil is at high temperature and low temperature. 1... AC magnetic contactor, 2... Lower frame, 4...
Fixed iron core, 5...Movable iron core, 6...Coil, 7...
...Movable contact support, 8...Movable contact, 11...
Fixed contact, 12...magnetic body, 14... shape variable body, 16... air gap.

Claims

[Scope of utility model registration request]

An alternating current electromagnet consisting of a fixed core equipped with a coil and a movable core supported by a movable contact is built in, and by energizing or de-energizing the coil, the fixed core is connected to the movable contact and the movable core. In an AC electromagnetic contactor configured to close or open a fixed contact disposed corresponding to the contact, the contactor is connected to a shape variable body made of a shape memory alloy, and the shape changes due to temperature of the shape variable body. , characterized in that a magnetic body is provided along the side surface of the air gap between the fixed iron core and the movable iron core of the AC electromagnet so as to be able to move in the opening/closing direction of the air gap and magnetically bypass the air gap. AC magnetic contactor.